CARDIOLOGY

Recognize the proarrhythmic potential of class IC drugs following myocardial infarction.

Explanation:

The CAST study has revealed an increase in mortality,with the use of class 1c drugs such as Flecainide in people with coronary disease if used for suppression of arrhythmias.

The only anti-arrhythmic drugs shown to be useful in such patients are Amiodarone and beta blockers.

In life threatening arrhythmias, AICD is superior to antiarrhythmics